\documentclass{article}
\usepackage[utf8]{inputenc}

\title{s21SmartCalculator}
\author{merlinst}
\date{@2023}

\begin{document}

\maketitle

\section{How to use}
Use keyboard input or buttons in the UI to enter an example. After entering, press '=' and you will see the answer in the input field. To build graphs, use the variable X and to build it, click on the Graph button.

\section{Build}
The calculator works without problems on MacOS and Linux. To build, just use the 'make install' command. You must have Qt and check libraries installed.



\end{document}
